These are very showy right now. Native to the Americas. This part is called a spore-bearing frond. This kind of fern is considered a living fossil because it occurs in the geologic record 75 million years ago.

Cinnmon Fern (Osmundastrum cinnamomeum)

Bonus picture: Lucy said, she always has to wait for me to take pictures; maybe I could wait a little bit while she checks for critters in this stump…